However when I search for it with the below query I get 0 results back which I assume is because of those % wildcard characters. How can I get around this to show all comments with the above text within them? Please ignore the /url tag because EE is asking me to put that in.

SELECT *
FROM FeaturesComments
WHERE COMMENT LIKE ''
and ApprovalStatus = 0

\% should escape the % wildcard. But if you're not getting any results with the wildcard in there, I can't see how escaping it would make something show up. Escaping the wildcard is going to make it even more restrictive, so if nothing showed up before, I can't imagine you'd get anything with it escaped. Ignore the spaces before/after the brackets-- needed them to get around the stupid EE parser.

To escape the % sign we need \%. In addition, we need a wild card % to use the like statement.
For example, in your search string, we need to escape the embedded % sign and then use actual % for wildcard, please try this

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